As far as I can tell from reading the directive, these conditions are free form text. The registry offers building blocks. For this specific dataset the BEV chose one of them. They could have used the other one or made up something on their own. In my mind, the one chosen makes the data (which the metadata is about) rather CC0 than CC-BY.
If this can be construed as dual-licensing, then mappers would be free to chose licence when copy-painting or importing. I am not fully certain, so I ask here, because INSPIRE affects most of Europe and certainly is of interest to more than mappers in Austria. Sadly, there are no backlinks in the registry, that could be used to find the data governed by the respective clauses.
@alesarrett I guess, the local community rather preferred the error in stating CC-BY in addition to “noConditionsApply” From communication with the office by another member @mcliquid, it seems very likely, that the office indeed does not comprehend CC, much as @SimonPoole stated. Whereas their administrative advisors clearly state, that CC-BY means “Conditions apply”.